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mac80211_hwsim: Group radios

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Currently all radios receive all traffic on the simulated air
if they are tuned to the same channel. This patch introduces
the concept of grouping, which allows to assign a radio to
certain group. Only radios in the same group can 'see' each other.

Each bit in /debug/ieee80211/phy*/hwsim/group
represents one group. By default all radios belong to the same group "1",
e.g. bit 1 is set. Additionally a radio can belong to several groups.

Signed-off-by: Daniel Wagner <wagi@monom.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Daniel Wagner 2009-05-18 19:49:25 +02:00 committed by John W. Linville
parent 1071db863b
commit 73606d0036
1 changed files with 34 additions and 1 deletions
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35
drivers/net/wireless/mac80211_hwsim.c
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@ -291,6 +291,14 @@ struct mac80211_hwsim_data {
bool ps_poll_pending;
struct dentry *debugfs;
struct dentry *debugfs_ps;
/*
* Only radios in the same group can communicate together (the
* channel has to match too). Each bit represents a group. A
* radio can be in more then one group.
*/
u64 group;
struct dentry *debugfs_group;
};
@ -412,7 +420,8 @@ static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
if (!data2->started || !data2->radio_enabled ||
!hwsim_ps_rx_ok(data2, skb) ||
data->channel->center_freq != data2->channel->center_freq)
data->channel->center_freq != data2->channel->center_freq ||
!(data->group & data2->group))
continue;
nskb = skb_copy(skb, GFP_ATOMIC);
@ -720,6 +729,7 @@ static void mac80211_hwsim_free(void)
spin_unlock_bh(&hwsim_radio_lock);
list_for_each_entry(data, &tmplist, list) {
debugfs_remove(data->debugfs_group);
debugfs_remove(data->debugfs_ps);
debugfs_remove(data->debugfs);
ieee80211_unregister_hw(data->hw);
@ -872,6 +882,24 @@ DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
"%llu\n");
static int hwsim_fops_group_read(void *dat, u64 *val)
{
struct mac80211_hwsim_data *data = dat;
*val = data->group;
return 0;
}
static int hwsim_fops_group_write(void *dat, u64 val)
{
struct mac80211_hwsim_data *data = dat;
data->group = val;
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
hwsim_fops_group_read, hwsim_fops_group_write,
"%llx\n");
static int __init init_mac80211_hwsim(void)
{
int i, err = 0;
@ -976,6 +1004,8 @@ static int __init init_mac80211_hwsim(void)
hw->wiphy->bands[band] = sband;
}
/* By default all radios are belonging to the first group */
data->group = 1;
/* Work to be done prior to ieee80211_register_hw() */
switch (regtest) {
@ -1100,6 +1130,9 @@ static int __init init_mac80211_hwsim(void)
data->debugfs_ps = debugfs_create_file("ps", 0666,
data->debugfs, data,
&hwsim_fops_ps);
data->debugfs_group = debugfs_create_file("group", 0666,
data->debugfs, data,
&hwsim_fops_group);
setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
(unsigned long) hw);